Maries County, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 97th-largest in Missouri
The population of Maries County, Missouri is 8,435 as of the 2023 American Community Survey, making it the 97th-largest county in Missouri. The median household income is $61,359, the median home value is $193,100, and the median age is 45.4.
The population of Maries County has declined 7.1% since 2010 (9,159 → 8,506), a -0.53% annualized rate.
8,435
Population
-0.53%
Annual growth
16
People / sq mi
$61,359
Median Income
$193,100
Median Home Value
Maries County covers 527 sq mi of land at 16.0 people per square mile.
About Maries County, MO
Educational attainment is the headline number in Maries County: 16.0% of adults 25 and older have a four-year degree. With 8,435 residents, Maries County is a county in Missouri.
Median household income is $61,359, below the US median of $78,538. About 8.9% of residents live below the federal poverty level, below the national 12.4%. The typical home is valued at $193,100, with typical rent around $594.
College attainment is 16.0%, below the national 35.0%. Remote work is below the national 14.0% at 6.1%, and the average commute runs about 33 minutes each way.
Maries County Population History (2010-2024)
The county of Maries County had a population of 9,159 in 2010 and 8,506 in 2024, a -7.1% growth over 14 years. The peak was 9,170 in 2011. Average annual growth rate: -0.52%.
8,506
Population (2024)
9,159
Population (2010)
9,170
Peak (2011)
-0.52%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 9,159 |
| 2011 | 9,170 |
| 2012 | 9,020 |
| 2013 | 9,031 |
| 2014 | 8,998 |
| 2015 | 8,934 |
| 2016 | 8,823 |
| 2017 | 8,791 |
| 2018 | 8,795 |
| 2019 | 8,751 |
| 2020 | 8,451 |
| 2021 | 8,418 |
| 2022 | 8,434 |
| 2023 | 8,441 |
| 2024 | 8,506 |
Race & Ethnicity
| White | 93.5% |
| Black or African American | 0.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.8% |
| Two or More Races | 0.0% |
Age & Sex
45.4
Median Age
49.9%
Female
50.1%
Male
22.2%
Age 65+
Age Distribution
Children (under 15): 16.1% · Seniors (65+): 22.2%
Income & Poverty
| Median household income | $61,359$-7,561 vs state |
| Mean household income | $74,425 |
| Per-capita income | $31,622 |
| Poverty rate | 8.9%+0.5% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 52.6% |
Top Industries by Employment
The largest employment sector in Maries County is professional & business services, accounting for 22.9% of workers.
How residents commute
0.0%
Drive alone
1.3%
Carpool
74.6%
Public transit
6.1%
Work from home
33.4 min
Avg commute
Housing
$193,100$-22,500 vs state
Median home value
$594
Median rent
77.9%
Homeownership rate
4,269
Total housing units
82.8%
Occupied
17.2%
Vacant
22.1%
Renter-occupied
Social & access
91.5%
With health insurance
86.6%
With broadband internet
18.2%
Foreign-born
12.3%
Veterans (18+)
23.1%
With a disability
97.6%
Speak language other than English at home
Education
86.1%
High School+
16.0%
Bachelor's+
Largest cities in Missouri
Other counties in Missouri
Part of Missouri
Metro areas in Missouri
County rankings
Frequently Asked Questions
Maries County, Missouri has a population of 8,435 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 97th-largest county in Missouri. Population density is 16 people per square mile.
The population of Maries County has declined 7.1% since 2010 (9,159 → 8,506), a -0.53% annualized rate.
The median household income in Maries County, Missouri is $61,359, with mean (average) household income of $74,425 and per-capita income of $31,622. 8.9% of residents live below the federal poverty level.
In Maries County, the largest racial and ethnic groups are White (93.5%), Hispanic or Latino (2.8%), Black or African American (0.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Maries County, Missouri is 45.4 years. Residents are 49.9% female and 50.1% male.
The median home value in Maries County is $193,100 and median monthly rent is $594. 77.9% of occupied housing units are owner-occupied. The county has 4,269 total housing units, 17.2% of which are vacant.
The largest employment sector in Maries County, Missouri is professional, scientific, and management services, employing 22.9% of workers. The unemployment rate is 2.5%.
Kansas City is among the largest cities associated with Maries County, Missouri, with a population of 508,233.
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Statewide data for Missouri
Population, race, income, age, and trends across Missouri
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.